Chapter 11.4, Problem 50PPS

To determine

To find cost of running a $3500$ watt air conditioner for one week.

Answer to Problem 50PPS

Cost of running a $3500$ watt air conditioner for one week is $58.8$ dollars.

Explanation of Solution

Given:

  $3500watts\cdot \frac{1kilowatt}{1000watts}\cdot \frac{168hours}{1week}\cdot \frac{10cents}{1kilowatt\cdot hours}\cdot \frac{1dollar}{100cents}$

Calculation:

Given:

  $3500watts\cdot \frac{1kilowatt}{1000watts}\cdot \frac{168hours}{1week}\cdot \frac{10cents}{1kilowatt\cdot hours}\cdot \frac{1dollar}{100cents}$

Simplifying the above expression, we have:

Cost of running a $3500$ watt air conditioner for one week $=$

  $3500\times \frac{1}{1000}\times \frac{168}{1}\times \frac{10}{1}\times \frac{1}{100}$ dollars

Solving further, we have:

Cost of running a $3500$ watt air conditioner for one week $=$

  $58.8$ dollars

Conclusion:

Hence, cost of running a $3500$ watt air conditioner for one week is $58.8$ dollars.